Me too! I've been bitten 3 times here in Isaan, and I'm a freakin' dog lover and owner! Ironically, it wasn't stray/feral dogs. In both cases it was neighborhood dogs that the Thai owners let run loose. In fact, one night I got bit twice by my next door neighbor's 2 dogs as I was returning home and passed their house on my motorbike. The first dog got a nip so the 2nd one decided to bite me as well. Luckily I didn't need stitches but off to the hospital I went for rabies shots. Of course, the Thai neighbor had to pay the bill. The next time I was riding my bicycle and a neighborhood dog gave me a nip as I rode by him. This particular dog was never friendly and I believe was beat on by its owner.
In both cases I had passed by those houses a gazillion times with no problem. OTOH during the past 16 years I've explored nearly every small village in the area either on foot, bicycle, or motorbike and have never been bitten. Yeah, I've been chased quite a few times, but always slow down, face them, and speak softly, and never had a problem. Yep, Thai dogs are extremely territorial and many are beat by their owners so they are afraid of strangers. My experience (other than my neighbors' dogs) has been to just be nice to them and the next time I pass by there's no problem. Most dogs are like elephants, they never forget. If you're nice they'll remember it and 99.99% of the mutts won't bother you again. But if you're mean they'll never forget that and will try to chase and/or bite every time. Sadly, I've got a walkabout buddy who hates dogs and hasn't learned that lesson yet. Oh well.